Improvement in machines for drilling and tapping water and gas-mains



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Letters Patent No. 111,474, dated January 31, 1871.

IMPROVEMENT IN MACHINES Fon DYRILLING ANuI'TAPPINc wATEnfANDcAs-MAINS;

The Schedule referred to in these Lettes Patent: and making part of. the same.

Be it known that we, J AMES RILEY and PATRICK RILEY, of the city of New York, in thejcounty of New York,.and State of New York, have invented a new and useful Improved"Machine forDrilling and Tapping Water` and Gas-Mains; and we do hereby declare that the `following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and the letters of reference marked thereon.

Our invention relates' to a-lnachine by .which water and gas-mains may be drilled andiapped, and service or stop-cocks inserted, while' the mains are filled with water or gas, under pressure,` without causing the escape of water o r gas, which necessarily occurs in tapping and inserting cocks in the ordinary way.

'lwo modifications of our machine are shown in the drawing, both, however, operating ou the same general principles. Figurel represents a top view of one modification of our machine, and I Figure 2, a. vertical section of the same through line x zu, fig. 1.-

' Figure represents an end view of the other modification, and l Figure 4, a vertical section on line y y, fig. 3. In figs. l and 2 A represents a metal cylinder with its lower end coucaved to fit and conform to the exterior surface of the main to he tapped, and its upper -end provided with a flange, a, for the purpose hereinafter described; j

'lhe concave lower end of said cylinder contains a recess into .which is fitted a packing of rubber or other suitable material, to form a. tight joint with the exterior surface ofthe main. B isa cylindrical top or cover to the cylinder A, having a flange, b, at its lower end, which lies on the flange a, at the upper end of the cylinder A, and is secured thereto by a rebated ringer follower, C,

which is bolted down -upon the flange a, the rebate in said ring forming an annular recess or groove, into which the flange b ofthe cylindrical cover B, lits.

Theseparts are ground so as to form a tight joint,

and yet not so tight but that the cover B will beA easily rotated, its flange ,b moving in said annular recess. A packing may be employed to render said jointperfectly water and `gas-tight.

In the-top of the cylindrical lcover B are two stuff-l ing-boxes b' b', through one of which passesa sleeve, D,

which surrounds and carries a drill-shaft, E. Through the other passes a shaft, F, which carries the stop or service-cock to beiusertcd.

The upper portion of the sleeve D has a screwthread cut upon it, which passes through andengages with a fcmale-screwin a cross-piece, Gr, which is supported by two standards H H, rising vertically from the cover B, and firmly attached thereto.

On the upper end of the sleeve D is awheel, d, for the purpose of trirning it, and its lower end rests upon a shoulder, c', on the lower end of the drillshaft E.

The upper end of the shaft F passes through the cross-'piece G, and the lower end is enlarged tore-A ccivc the shank of the stop or service-cock, and also to forma shoulder,` preventing it from being forced through the stuffing-box by pressure within. the cylinder. 4

In the lower end of the drill-shaft-E is formed a socket, into. which is inserted the shank ofthe screwtap K, which is secured therein by a piu passed transversely through the shaft and shank.

'Ihc lower end of the screw-tap has a similar socket, into which is inserted the shank of the drill-blt L, and securedthereiu as aforesaid.

The lower end of the shaft F has a female-screw socket'iu it, into which is inserted the screw-shank of the service-cock an, preparatory to being inserted into the water or gas-main. l

To use the apparatus the lower-face of the cylinder A is placed upon the main over the place to be tapped, and the `apparatus secured to the main by means ofthe chains or bands hereinafter described.

lhe'drill is then forced downnp'on the main by 'turning the sleeve D, and the drill-shaft is put in. op-

eration by rotating it by means of the wheel c'.

After the Inain is drilled the' sleeve D is to be still further depressed, causing the tap K to enter the opening made by the drill, vand form the screw-threads necessary to hold the service-cock.

-The tap and drill-bit are then withdrawn by elevating the sleeve D and shaft E, and the cover' B is turned or partially rotated so as to bring the lower Vendet' the cock L over the aperture, and said cover4 I is secured in position by means of plus j j.

rIhe cock is inserted by turning the shaft F, which screws the`lower end of said cock into the aperture. The cylinder A is then detached from the main and removed, with all thei'rnachiuery pertaining to it, except the shaft F, which remains attached to the cock.

The cylinder A being thus removed, the shaft Fis easily detached from the cock by turning it iu a reverse direction.

In the modification shown by gs. 3 and 4, instead ofthe cylinder A we'use a rectangular chest, A, the lower side of which is open and concave, to conform to the shape of the main to be tapped, and provided with suitable packing to make a water and gas-tight joint, and, instead of rotating the cover' to bring the and yplaned or ground perfectly true, for the purpose f hereinafter described.

llo the said ang'es are attached, by means of screws or otherwise, the metallic strips G', rebated on the -lower side, which form recesseshin which the flanges on the cover Bslide. These anges are pl'aned or ground, so as to fit the upper face ofthe chest A, and form a water and gas-tight joint.

The vsliding anged cover B contains the stuffingboxes, through which the sleeve D, carrying the drillshaft E, and the shaft F, for carrying'the service-cock, pass, as in the other modification. The said sleeve and shaft pass through a cross-piece, G', as in the first modification, which is attached to standards H, secured tothe sliding cover ofthe rectangular chest.

At each end of the rectangular chest, or on opposite sides of the cylinder A, is a lug, Q, in the upper side of whichva set-screw, r, is inserted, passing through a eross-heads. To the ends of these cross-heads trusschains Aor bands @passing round the main, are attached. The chains or bands may be tightened so as. to draw thelchest more closely down upon the main, by-turning the screws c" so as to raise the crossheads to which the chains are attached.

The apparatus in the last-mentioned modiiicat-ion is used by securing the chest over the main by means of the chains, and the aperture drilled and tapped as before'. y The service-cock is then inserted by sliding the cover B along` the face of'the chest until the shaft F, with the service-cock, is brought over the aperture. The said cock is inserted by means of the shaft, as before described, when the chest .may be removed, leaving the shaft F attached to the cock, as in the first-mentioned modification.

What we claim as our invention, and desire to secure by Letters Patent, is-

, 1. In combination with the water and gas-tight 'cylinder or chest, herein described, a rotating or sliding cover, carrying a drill-shaft and shaft to insert the service-cock, substantially as described.

2. In combination with the subject-matterof the preceding claim, the drill-shaft E and screw-sleeve D,

constructed and arranged to operate substantially as described.

JAMES RILEY.

Witnesses: PATRICK RILEY.

T. S. WATERS,

WILLIE EDOUIN. 

